On Fri, Dec 03, 2004 at 09:24:48AM -0700, Ed L. wrote:
> Sounds like 24x7x365 operations on a single cluster is maybe too
> tall of an order under these loads. Maybe time for slony & friends
> for maintenance switchovers.
24x7x365 was never the true operation point. All systems have/need
regularly scheduled downtime for service/maintence. Even systems
that claimed "five nines" reliability did not include their regular
scheduled downtime in the "five nines" calculation.
http://www.bcr.com/bcrmag/2002/05/p22.php
See the "Myth vs. Reality" section.